Equations 0.0 / 5 ? ChemistryAcids, bases and saltsAtoms and compoundsStructure and bondingTesting and analysing substancesIGCSEEdexcel Created by: estherparkCreated on: 15-04-18 13:59 lead (II) bromide --> lead + bromide PbBr2(l) --> Pb(l) + Br2(g) 1 of 29 Cathode in electrolysis of lead (II) bromide Pb2+ (l) + 2e- --> Pb(l) 2 of 29 Anode in electrolysis of lead (II) bromide 2Br- (l) --> Br2(g) + 2e- 3 of 29 Group 1 elements + water metal hydroxide + hydrogen gas 4 of 29 2Na(s) + 2H2O(l) 2NaOH(aq) + H2(g) 5 of 29 Hydrogen chloride dissolved in acid Makes hydrochloric acid (forms H+ ions) 6 of 29 Hydrogen chloride dissolved in methylbenzene Doesn't produce acid as it doesn't dissociate 7 of 29 Halogen displacement More reactive halogen displaces the less reactive halogen 8 of 29 Displacement: Cl2(aq) + 2NaBr(aq) 2NaCl(aq) + Br2(aq) 9 of 29 Copper + oxygen --> copper oxide 2Cu + O2 --> 2CuO (volume of air decreases 20%) 10 of 29 Iron + oxygen + water --> hydrated iron (III) oxide 4Fe + O2 + H2O --> 2FeO3.nH2o (volume of air decreases by 20%) 11 of 29 Phosphorous + oxygen --> phosphorus oxide 4P + O2 --> P4O10 (water level in bell jar rises by 20%) 12 of 29 Hydrogen peroxide --(manganese 4 oxide)--> oxygen + water 2H2O --(MnO2)--> O2 + 2H2O (oxygen collected by downwards displacement method) 13 of 29 Magnesium + oxygen --> magnesium oxide 2Mg(s) + O2(g) --> 2MgO(s) (magnesium produces bright white flame, leaves white ash which is slightly alkali when dissolved) 14 of 29 Carbon + oxygen --> carbon dioxide C(s) + O2(g) --> CO2(g) (carbon only burns in air if strongly heated with yellow-orange flame, CO2 is slightly acidic) 15 of 29 Sulfur + oxygen --> sulfur dioxide S(s) + O2(g) --> SO2(g) (burns with pale blue flame, sulfur dioxide acidic) 16 of 29 Hydrochloric acid + calcium carbonate --> calcium chloride + water + carbon dioxide 2HCl(aq) + CaCO3(s) --> CaCl2(aq) + H2O(l) + CO2(g) 17 of 29 Copper (II) carbonate --> copper oxide + carbon dioxide CuCo3(g) --> CuO(s) + CO2(g) (produced by thermal decomposition) 18 of 29 Hydrogen combustion 2H2O + O2 --> H2O (hydrogen burnt in air produces water) 19 of 29 Alkanes formula CnH2n+2 20 of 29 Alkenes formula CnH2n 21 of 29 Bromine and methane in a UV light form bromomethane CH4 + Br2 --> CH3Br + HBr (bromine takes the place of hydrogen) 22 of 29 Addition reaction of alkenes with bromine Alkene makes double bond into single bond to bond to 2 bromines (C2H4 + Br2 --> C2H4Br2) 23 of 29 Magnesium sulfate crystals MgSO4(aq) + 7H2O(l) --> MgSO4.7H2O(s) 24 of 29 Silver nitrate + sodium chloride --> silver chloride + sodium chloride AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3(aq) 25 of 29 Ionic half equation of extraction of aluminium oxide at cathode 2O2- --> O2 + 4e- 26 of 29 Ionic half equation of extraction of aluminium oxide at anode Al3+ + 3e- --> A 27 of 29 Ionic half equation of extraction of aluminium oxide at cathode 2O2- --> O2 + 4e- 28 of 29 Ionic half equation of extraction of aluminium oxide at anode Al3+ + 3e- --> Al 29 of 29
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